Transmitted by the expert from GTB

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Presentation transcript:

Transmitted by the expert from GTB Informal Document No. GRE-76-25 (76th GRE, 25-28 October 2016, agenda item 7 (f)) Night demonstration: H4 Halogen Reflector headlamp versus representative LED headlamp Geneva, 26.10.2016 Dr. Rainer Neumann GTB Document No.CE-5360

LED Headlamps : Advantages Low energy consumption Reduced CO2 Effective solutions also with small sized headlamps Long life time Flexibility in styling solutions keeping safe light output Colour temperature leads to a well accepted light by consumers GTB Document No.CE-5360

Proposal for Future Halogen & LED Headlamps Intention: Target to demand a good light pattern on the road rather than requiring a certain number of lumens emitted by the light source Introduction of a performance based requirement alternatively to the exisiting 1000 lm objective luminous flux for LED and halogen light sources Take into account the given state of the art globally GTB Document No.CE-5360

New Performance Proposal for LED Headlamps +1 deg Zone B >= 200lm -3.5 deg Zone A >= 400lm -15 deg -30 deg +30 deg GTB Document No.CE-5360

Mounting Height (h), Inclination (alfa), distance (x) GTB Document No.CE-5360

Headlamp mounting height [cm] Ray inclination [deg] Distance on the road [m] 85 0.57 85.4 2.50 19.5 3.50 13.9 5.00 9.7 Headlamp mounting height [cm] Ray inclination [deg] Distance on the road [m] 65 0.57 65.3 2.50 14.9 3.50 10.6 5.00 7.4 GTB Document No.CE-5360 Page 6

Representative LED Headlamp (out of 60) , 513 lm total luminous flux GTB Document No.CE-5360

Reflector Headlamp H4 , 155mm diameter , 467 lm GTB Document No.CE-5360

Photometric Results Representative LED Headlamp : total luminous flux : 513 lm Zone A : 511 lm Zone B : 327 lm Reflector H4 Headlamp, 155mm diameter : total luminous flux: 467 lm Zone A : 445 lm Zone B : 206 lm GTB Document No.CE-5360

Reflector Headlamp H4 , 155mm diameter , 467 lm GTB Document No.CE-5360

Reflector Headlamp H4 , 155mm diameter, 400 lm GTB Document No.CE-5360

Reflector Headlamp H4 , 155mm diameter, 300 lm GTB Document No.CE-5360

Reflector Headlamp H4 , 155mm diameter, 200lm GTB Document No.CE-5360

Reflector Headlamp H4 , 155mm diameter, 100lm GTB Document No.CE-5360

Comparison: different 400lm light distributions GTB Document No.CE-5360

Comparison: different 400lm light distributions GTB Document No.CE-5360

Comparison: different 400lm light distributions GTB Document No.CE-5360

Comparison: different 400lm light distributions GTB Document No.CE-5360

Comparison: H4 light distributions GTB Document No.CE-5360

Comparison: balanced LED light distribution GTB Document No.CE-5360

Comparison: H4 light distributions GTB Document No.CE-5360

Comparison: balanced LED light distribution GTB Document No.CE-5360